Try the video enabled collaboration tool Kaltura to take wiki-like collaboration to the next level. While you can follow the details in this tour, all you need to do is really set up the specific page (where your shared video will reside), invite your fellow collaborators, and then upload photos, videos, and audio files. Once you have files that have been uploaded (by you or anyone in your group), you can then go to work creating and editing your final video. You can drag and drop videos and images along a time-line, in much the same way that professional video editing is done. Just as with a text-based wiki, your fellow collaborators can edit with you.
At your next big PR event, why not ask your team, interns, or just about anybody to collaborate on a summary that incorporates video and audio highlights from a group perspective? Sometimes fast and authentic is much more powerful than slick and professional.